Approximately 3,300 employees at the seven impacted facilities will be affected.

Impacted call centers will remain open for three months after this announcement.

Jobs at the other 17 call centers as well as at T-Mobile stores should remain unaffected for now.

There are also some conflicting sentiments and messages in the memo.

For one, Humm explained that T-Mobile will immediately begin hiring at the remaining 17 call centers with as many as new 1,400 jobs.

It looks like some employees might be able to retain their jobs -- if they're willing to move -- as Humm explained that "employees who choose not to transfer and are employed on the date the center closes, will be offered transition packages with severance pay and outplacement support."

On the other hand, more layoffs at T-Mobile are still very possible as Humm noted that they will be "restructuring other parts of the company" in the near future.

The reasons behind the workforce reduction is to better optimize cost structures to "match the customer base and call volumes."